Structure and physical properties of aluminium alkoxides. Part III: Vibrational spectra of aluminium isopropoxides

2010 ◽  
Vol 90 (4) ◽  
pp. 410-422 ◽  
Author(s):  
W. Fieggen ◽  
H. Gerding
Keyword(s):  
Physical Properties ◽  
Vibrational Spectra ◽  
Aluminium Alkoxides

Poly (L,4-Naphthylene Sulfide) Oligomers: Electronic And Vibrational Spectra Of The Pristine And Oxidized Forms

1993 ◽  
Vol 328 ◽  
Author(s):  
P. Piaggio ◽  
G. Petrillo ◽  
M. Novi ◽  
C. Dell'Erba
Keyword(s):  
Physical Properties ◽  
Vibrational Spectroscopy ◽  
Vibrational Spectra ◽  
Sulfur Compounds ◽  
Steric Effects ◽  
Regular Arrangement ◽  
Electronic And Vibrational Spectra ◽  
Charged Defects

ABSTRACTNew naphthalene-sulfur compounds, oligomers of poly (l,4-naphthylene sulfide), have been synthesized and studied by electronic and vibrational spectroscopy in both pristine and oxidized forms. It has been found that the charged defects induced on these molecules are Much More stable than in the corresponding 1,4-phenylene derivatives. Nevertheless their physical properties are strongly affected by steric effects which hinder a regular arrangement of the repeating units.

Effects of Boron Implantation on Silicon Dioxide Passivated HgCdTe

1986 ◽  
Vol 90 ◽  
Author(s):  
R. C. Bowman ◽  
J. Marks ◽  
R. G. Downing ◽  
J. F. Knudsen ◽  
G. A. To
Keyword(s):  
Refractive Index ◽  
Silicon Dioxide ◽  
Physical Properties ◽  
Vibrational Spectra ◽  
Depth Profiling ◽  
Neutron Depth Profiling ◽  
Boron Implantation

ABSTRACTThe influence of boron ion implants on the optical and physical properties of photochemically deposited SiO2 films on HgO 7 CdO 3Te and silicon has been investigated. The distributions of the boron atoms between the SiO2 film and substrate have been determined by a nondestructive neutron depth profiling method. The implants produce an apparent densification of the SiO2 films, which is accompanied by an increase in refractive index and changes in the infrared vibrational spectra for these films.

Synthesis and Vibrational and Mass Spectra of (n-Bu)2Sn(O2PMe2)2, (n-Bu)2Sn(O2PMePh)2 and (n-Bu)2Sn(O2PPh2)2

1995 ◽  
Vol 50 (5) ◽  
pp. 745-749 ◽  
Author(s):  
Abdel-Fattah Shihada
Keyword(s):  
Physical Properties ◽  
Vibrational Spectra ◽  
Mass Spectra ◽  
Base Peak ◽  
Trans Position ◽  
Octahedral Environment ◽  
In Trans ◽  
Fragmentation Processes

Abstract Di-n-butyltin dimethylphosphinate has been synthesized by the reaction of (n-Bu)2Sn(OCOCH3)2 with HO2PMe2 in benzene. The ractions of (n-Bu)2Sn(OCOCH3)2 with MePhPOCl and Ph2POCl in toluene have been used to prepare (n-Bu)2Sn(O2PMePh)2 and (n-Bu)2Sn(O2PPh2)2 respectively. On the basis of vibrational spectra and physical properties it is conclu ded that the title compounds are polymerized and the ligands function as O-P-O bridges between the tin atoms. The n-butyl groups are in trans position in the resulting octahedral environment around tin. Loss of n-butyl radicals and of the diorganophosphinate group from tin represent the main fragmentation processes in the El mass spectra of (n-Bu)2Sn(O2PRR′)2(RR′=Me2, MePh, Ph2). The mass spectra show Sn(O2PRR′)+ as the base peak.

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